2469645 has 12 divisors (see below), whose sum is σ = 4280796. Its totient is φ = 1317120.

The previous prime is 2469637. The next prime is 2469647. The reversal of 2469645 is 5469642.

2469645 is a `hidden beast` number, since 2 + 4 + 6 + 9 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 447561 + 2022084 = 669^2 + 1422^2 .

It is not a de Polignac number, because 2469645 - 2³ = 2469637 is a prime.

It is a super-3 number, since 3×2469645³ = 45188179425901533375, which contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2469647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27396 + ... + 27485.

It is an arithmetic number, because the mean of its divisors is an integer number (356733).

2^2469645 is an apocalyptic number.

It is an amenable number.

2469645 is a deficient number, since it is larger than the sum of its proper divisors (1811151).

2469645 is a wasteful number, since it uses less digits than its factorization.

2469645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54892 (or 54889 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2469645 is about 1571.5104199464. The cubic root of 2469645 is about 135.1693348342.

The spelling of 2469645 in words is "two million, four hundred sixty-nine thousand, six hundred forty-five".